Chemical Reactions

Chemical Reactions

100

One of the following is NOT a physical change: splitting wood, melting ice, burning wood or dissolving salt in water.

What is burning wood?

200

In a chemical reaction the substances to the right of the arrow are called this/these?

What is/are products?

300

The abbreviation in a chemical reaction represents the state of matter that in which ionic compounds are dissolved in solutions.

What is aq?

400

When balancing an equation, these numbers can not be changed.

What is a subscript?

500

Give three examples of details showing that a chemical change has taken place.

What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?

II

100

In the formula 5CaSO₄, this is the number of oxygen atoms.

What is 20?

200

DOUBLE JEOPARDY!!!!!!!!!!

C₃H₈ + O₂ ----> 3CO₂ + 4H₂O + heat

is this type of chemical reaction. (think temperature)

Combustion

300

Balance the following chemical reaction:

H₂ + NaCl --> HCl + Na

H₂ + 2NaCl --> 2HCl + 2Na

400

DOUBLE JEOPARDY!!!!!!!!!!!!!

A solid that forms from a solution during a chemical reaction.

What is a precipitate?

500

What is the net ionic equation of the double replacement reaction between sodium chloride and silver nitrate?

Ag⁺_(aq) + Cl^-_(aq) --> AgCl_(s)

III

100

A substance that enters a chemical reaction is called this.

What is a reactant?

200

This type of change occurs when a substance or multiple substances rearrange, in which a new substance is created.

What is a chemical change?

300

An expression in which symbols and formulas are used to represent a chemical reaction.

A chemical equation

400

Predict the products of this double replacement reaction: 2NaOH + K₂CrO₄ →

2NaOH + K₂CrO₄ → 2KOH + Na₂CrO₄

500

These types of reactions involve rearranging the chemical composition. Often times the same number of products as reactants.

What is a Double Replacement Reaction?

IV

100

Neutralization reactions have these as its products

What are water and a salt?

200

DOUBLE JEOPARDY!!!!!!!!!!!!!

Predict the products of this synthesis reaction: 

2CaO + H₂O-> 

2CaO + O₂ --> 2Ca(OH)₂

300

Balance the following equation:

NH₄NO₃  --->   N₂O  + H₂O

NH₄NO₃  --->   N₂O  + 2 H₂O

400

The reaction 2HgO ---> 2Hg + O₂ is an example of this type of reaction.

What is decomposition?

500

Balance the reaction: C₃H₈ + O₂ --> CO₂ + H₂O

 C₃H₈ + 5O₂ --> 3CO₂  + 4H₂O

V

100

This type of change occurs with a change in the properties of a substance that is usually reversible.

What is physical?

200

A molecule consisting of two atoms. Ex: O₂ or H₂

What is diatomic?

300

State the Law of Conservation of Mass.

What is that matter can not be created or destroyed in a chemical reaction?

400

Complete ionic equations represent this.

How substances are realistically existing within the chemical reaction.

500

This type of reaction involves breaking down the chemical composition. Often times more products than reactants result.

What is a Decomposition reaction?